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A synthetic tripeptide bioregulator (Glu-Asp-Arg) from the Khavinson peptide-bioregulation program, studied in cell-culture and rodent models for neuroprotection against hypoxia and oxidative stress and for proposed gene-regulatory activity.
Pinealon is a synthetic tripeptide with the sequence Glu-Asp-Arg (EDR), developed within the Khavinson short-peptide bioregulator program at the Saint Petersburg Institute of Bioregulation and Gerontology. Despite its name, it was reportedly identified from cortexin, a bovine brain-cortex polypeptide extract; the 'pineal' designation refers to proposed neuroendocrine effects rather than tissue of origin.
PubChem lists the tripeptide under CID 10273502 with molecular formula C15H26N6O8 and a molecular weight of about 418.4 g/mol. It belongs to a family of ultra-short peptides that the Khavinson group has proposed can interact with DNA and modulate gene expression.
All findings here are from preclinical cell-culture and rodent research. There are no human clinical trials establishing efficacy, and this entry is provided for research and reference use only.
The Khavinson group has proposed that short peptides such as EDR can interact with specific DNA sequence elements in gene-promoter regions, modulating transcription of genes including antioxidant enzymes (for example SOD2, GPX1), neurotrophic factors, and circadian regulators. In this model the positively charged arginine residue interacts with the anionic DNA backbone while the glutamate and aspartate residues provide sequence-specific contacts.
In cell-culture studies, Pinealon has been reported to protect neurons against hypoxia and oxidative stress, reduce apoptotic cell death, and influence melatonin-related and circadian pathways. These are experimental observations and remain mechanistic hypotheses rather than established human effects.
EDR peptide and Alzheimer's-related gene expression (PMC7795577): A study examined EDR (Pinealon) as a possible modulator of gene expression and protein synthesis relevant to Alzheimer's disease pathogenesis in experimental systems. Reported for reference only.
Khavinson-group neuroprotection studies: Cell-culture work from the Saint Petersburg Institute of Bioregulation and Gerontology reported that Pinealon protected neurons against hypoxia and oxidative stress and reduced apoptosis. Described for information only.
Peptide-DNA interaction reports: Biophysical and cell studies from the same research program explored the proposed interaction of short peptides such as EDR with DNA promoter elements. These are preclinical observations; any concentrations used are experimental parameters, not recommendations.
Combinations examined in the research literature. Descriptive only — not a recommendation to combine compounds.
References are being compiled for this entry.